Production of building felt



Patented Apr. 2, 1929;

UNIT-EDSTATES PATENT OFFICE. 1

RAY 2. Permit, or urpnauonrcmm, nnw mnsnr, AssIeNoR TO THE BARRETT COMPANY, A CORPORATION on NEW JERSEY.

mzonu'c'rion or No Drawing. Application filed April 7,

This invention relates to the production of feltsand the like. It relates more articularly to the preduction of products tiat are es pecially suitable for such uses as roofing strips and shingles.

An Object of, the invention is to produce products of this vcharacter having1 incorporated therein, during the course of its manufacture, a proportion of Waterproofing material which can be varied in amount throughoiit a wide range without interfering with the continuityof operation of the process and without departing froin the spirit or scope of this invention. A Another object of the invention is to ren' der it possible to produce such-products having incorporated therein a materially larger percentageof Waterproofing material than has heretofore beenffeasible with the old processes as used in practice.

1 Another object is to overcome the diffi'culties that have heretofore been experienced when it was attempted tointrodnce a large percentage of waterproofing inaterial into such products when the cheap or relatively inexpensive fibrous; niaterials were [usedin making the sanie. Other objects and advantages of the invention will be obvious as the descriptionvproceeds. t y it In pr'cticin;q th's invention an aqueous emulsion of the Waterproofing material, which it is desired to f ise, may he inixedvvith fibrous inaterial in the beatersof an ordinary paper-making machine and becomes incororated in the sheet vvhile thesheet is being orrn'edg The waterproofing inaterial to be used, ma fer xample, e pitcher asphalt, and its inelting peint ma vary t'o a 'consider able extent, say from abo1it100 F. or, low r t0 2 0 B or h her The fi r us material t e us d m y b eit i 'y. w t Pepsi stock or a miz' zture of Waste paper stock and reg stock, etc, 7

A q dus im i f h lw 'lll'p g material, siich as pitch; or as'phalt; may be inade foi exampl introdii cin g fvvateia proofing l mater al into, water eontaining anmi s fy i e i i i h flg l b 11 2" water-eontainingsil ate that occurs in ha; I A

pure and; has a hei-fdi-iess of l'esjs than 3 and usually; ha dne s efirom 1 to 2. ,St'eatite,

tyne one iii si iine se i when I may u T e m s fyin a t w l he "fi ely ground or piilverlzed and the proportions surname FELT.

1922. Serial 1%. mm.

agent in the proportions ranging from about 10 to 1 of the latter materials to the proportion of aboutl to 4: of the same, the combined Weight of the Waterproofing and elnulsifying materials generally being less than half of the Weight of the sheet.

A Water pulp of fibrousvrnaterial inay be niixed with the aqueous einnlsion of bitumi- I nous or waterproofin material and soap stone or other emulsiing agent before the einulsion is introduced into' the vat of a paper-making machine. the paper-making fibrous material may be introduced into an emulsion of waterproofing material, and the inixture then introduced nto t e vat of the papermaking machine. By following i this procedure small particles of waterproofing niaterial are intermingled with the fibers of it the paper pulp,so that as the sheet is formed on the papermakingrnachine; the particles of waterproofing material ,beco'inesubstantially uniforini distributed threughoiitthe sheet with the bers,

theparticles of wat rpr o n material has been formed, it may be driedby means of dryi r l s, it m y been s i d of dr ing the, sheet as mentioned the sheet may ep dbe we Pr ss re tells, when hi s y; if t im be h t tha P tt take place.

as the-state:

After the sheet containing fibers. and

drying and a part pressing apeation will iiio stock and an emulsion containin waterproofing material and steatlte, and ormmg on a paper-making machine a sheet from said mix .waterproofing material and steatite, and .forming on a paper-making machine a sheet from said mixture.

3. The herein described process, which comprises mixing inwater, paper-making stock an emulsion containing asphalt and steatite, and forming on a paper-making machine a sheet from said mixture.

4. The herein described process, which comprises mixing 1n water, paper-making stock and an emulsion containing asphalt and steatite in substantially the proportions of 5 to 1, and forming on a paper-making machine a sheet from'said mixture; 7

5. The'herein described process, which comprises mixing in water, paper-making stock and an emulsion containing waterproofing material and soapstone, and forming on a paper-making machine a sheet from said mixture. i

6. The herein described process, which comprises mixing in water, paper-making stock and an emulsion containing bituminous waterproofing material and soapstone, and forming on a paper-making machine a sheet from said mixture 7. The hereindescribed process, which comprises mixing in Water, paper-making stock and an emulsion containing asphalt and soapstone, and forming on a paper-making machine a sheet from said mixture.

. 8. The herein described process, which comprises mixing in water, paper-making stock and an emulsion containing asphalt and soapstone in substantially the proportions of 5 to 1, and forming on a paper-making machine a sheet from saidmixture.

; 9. The-hereindescribed process, which comprises mixing in-water, paper-making stock and an emulsion containing asphalt and soapstone in substantially the proportions of 5 to 1, said mixture being in the proportion of about 10 to 40 parts by weight of stock to about 90 to 60 parts by weight of asphalt and soapstone, and forming on a paper-making machine a sheet from said mixture.

10. The. hereln described process, whlch comprises mixing paper-making stock in water with an emulsion containing waterproofing material and talc, and forming on a paper-making machine'a sheet from said mix 11. The herein described process, which comprises a mixing paper-making'stock in water with an emulsion containing bituminous waterproofing material and talc, and forming on a paper-making machine a sheet from said mixture.

12. The herein described process, which comprises mixing paper-making stock in water with an emulsion containing asphalt and talc, and forming on a paper-making machinea sheet from said mixture.

13. The herein described process, which comprises mixing paper-making stock in water with an emulsion containing asphalt and talc in substantially the proportions of 5 to 1, and forming on a paper-making machine a sheet from said mixture.

14. The herein described process, which comprises mixing paper-making stock in water, with an emulsion containing asphalt and tale in substantially the proportions of 5 'to 1, said mixture being in the proportion of about 10 to 40 parts by weight of-stock to about 90 to 60 parts of asphalt and talc, and I forming on apaper-making machine a sheet from sald mixture.

15. The process which comprises 'formlng an emulsion of water, waterproofing mate rial and talc,-,m1x1ng paper-making stock therewith, and forming on a paper-making machine a sheet from said mixture.

16. The process which comprises forming an emulsion of water, waterproofing material and soapstone, mixing paper-making stock therewith, and forming on a. papermaking machine a sheet from said mixture.

17 The process which comprises forming an emulsion of water, waterproofing material and steatite, mixing paper-making stock therewith, and forming on a paper-making machine a sheet from saidmixture.

18. The herein described process, which comprises mixing in water, paper-making stock and an emulsion containing waterproofing material and steatite of a hardness of approximately 1, and forming on a paper-mak ing machine a sheet from said mixture.

19. A construction material comprising fi- RAY P. PERRY.

CERTIFICATE or CORRECTION.

him No. "1,107,491, I Granted April 2, 1 929, to

RAY P. PERRY.

It is hereby certified that-error appears in the printed specification of the I ahovenumber'ed patent requiring correction as follows: Page 1, line 105, after the word "sheets" strike'out the comma; page 2, line 13, claim 3, before the,

7 word ,"an" insert the word "and"; same page. line 61,"claim f1, strike outthe article ','a"; page 2-, line 119, claim 22, before the word "material" insert the Y word ,Y'iihrous"; and that thesaid Letters Patent should be read with these cor rections-therein that the same may conformto the record f th case in the Patent 0ftice. i

Signed and scaled this 28th day of May, A. D. -1929.

. i v I M. J. Moore,

(Seal) 7 i Acting Commissioner of Patents,

CERTIFICATE OF GORREQTEUN.

Patent No. 1,707,491. Granted April 2, 1929, to

RAY P. PERRY.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction asioilows: Page B line 105, after the word "sheets" strike out the comma; page 2 line 13, eiaim 3, before the word "an" insert the word "and"; same pagea iine iii, claim 11, strike out the article "a"; page 2, line 11), claim 22, beiore the Word "materiai" insert the word "fibrous"; and that the said Letters iatent should he read with these corrections therein that the same may eoaierra to the record of the case in the Patent Office.

Signed and sealed this 28th day of May, A. D. 1929.

M. J. Moore, (Seal) Acting Commissioner of Patents. 

